如何在ajax中調用RESTful Web服務？

我想通過使用Ajax來使用Restful Web服務進行貨幣轉換。在這裏，我無法解析或讀取由Restful webservice生成的xml文件中的數據，請仔細閱讀我的代碼並幫助我。如何在ajax中調用RESTful Web服務？

代碼：雖然你沒有提供

<html> 
<head> 
    <script> 
     var xmlHttp 
     function showCust() 
     { 
      // alert("function Called"); 

      xmlHttp = new XMLHttpRequest(); 
      // alert("function Called"); 
      //var fromCurr = document.getElementById("name"); 
      var fromCurr = f1.elements[0].value; 
      var toCurr = f1.elements[1].value; 
      // alert("function Called"); 
      //alert(fromCurr + " " +toCurr); 
      var url = "http://www.webservicex.net/CurrencyConvertor.asmx/ConversionRate?FromCurrency=" + fromCurr + "&ToCurrency=" + toCurr; 
      alert(url); 
      xmlHttp.open("GET", url, true);//it will call 'CustomerDetails' servlet 
      // alert("function Called"); 
      xmlHttp.onreadystatechange = stateChanged;//this is userdefined method which will fired based readyState property 
      xmlHttp.send(); 
     } 

     function stateChanged() 
     { 
      // alert("function Called"); 

      //check whether the response is completely loaded or not? 
      if (xmlHttp.readyState == 4) 
      { 

       var str1 = xmlHttp.responseText; 
       alert(str1); 
       //var myObject = eval('(' + str1 + ')'); 
       //var text = '{"name":"Sivarmayya","email":"[email protected]","phone":"9000387222"}' 
       var users = xml.getElementsByTagName("double"); 
       alert(users); 
       var user = users[0]; 



       //var obj = JSON.parse(str1); 
       //document.f1.mail.value=obj.mail; 
      } 
     } 
    </script> 
</head> 
<body> 

    <form name="f1" > 
     From Currency:&nbsp; <input type="text" title="enter from currency" id="name"/><br> 
     To Currency:&nbsp; <input type="text" title="enter to currency" id="name1"/></br> 
     <input type="submit" value="Go" onclick="return showCust()"> 
     Result:&nbsp;&nbsp;<input type="text" name="mail" /><br> 
    </form> 
</body>

來源

2015-05-19 praveen gogula

什麼樣的你打的錯誤，我認爲你的問題是，您的瀏覽器阻止CORS請求：http://en.wikipedia.org/wiki/Cross-origin_resource_sharing

來源

2015-05-19 14:46:13

我沒有得到任何錯誤。問題是我無法從使用指定網址生成的xml文件中獲取數據.. –

如何使用ajax啓用瀏覽器的CORS –

做好你的功課，google吧！關鍵字'enable cors'在第一頁上給出了很多相關的結果。無論如何，你可以從http://www.html5rocks.com/en/tutorials/cors/ –

如何在ajax中調用RESTful Web服務？

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